The Open Spreety API sticks a TV and a TV guide in your program. According to the API webpage, you can have users search for shows by title, genre, and by the decade the show was produced, among other criteria. Despite all the pay walls and cable costs, Open Spreety says there is so much free content out there from the mainstream media that viewers can get lost in the forest of choices.

23andMe is a DNA analysis service that allows individuals to learn more about their DNA. Users can use the service to trace their ancestry, learn more about their present health and participate in research to benefit future generations. The company also offers this neatly categorized and searchable data to researchers and scientists.

The Big Huge Thesaurus API provides a convenient interface for initiating a search based on an English word and retrieving related words and phrases.
The Big Huge Thesaurus includes more than 145,000 english language words.